Quantification of fine root responses to selenium toxicity

	Quantification of fine root responses to selenium toxicity
	Hartikainen, H ; Pietola, L ; Simojoki, A
刊名	AGRICULTURAL AND FOOD SCIENCE IN FINLAND
	2001
卷号	10 期号:1 页码:53-58
关键词	Scanning Image Analysis Lettuces Morphology Ryegrass Selenium Toxicity
文献子类	Article
英文摘要	The morphological changes of lettuce and ryegrass roots in response to Se toxicity were quantified by image analysis. Based on the assumption that soil stresses increase endogenous ethylene production in plants, changes indicating higher construction costs for roots, such as decreased specific root length, were expected. As lettuce roots in soil without Se addition (control) became older, their width increased whereas their specific length, specific surface area and specific volume decreased. In younger lettuce, large Se additions induced changes resembling those identified in the control plant upon senescence. In older plants, Se fertilisation reversed these changes or made them smaller. Ryegrass roots were not as sensitive to added Se as lettuce roots; a lower dosage stimulated root growth but a higher one reduced it.
WOS关键词	PLANT-GROWTH ; IRRADIATION ; ETHYLENE
语种	英语
出版者	AGRICULTURAL RESEARCH CENTRE FINLAND
WOS记录号	WOS:000167895500007
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/68303]
专题	中国科学院地理科学与资源研究所
通讯作者	Hartikainen, H
作者单位	1.Univ Helsinki, Dept Appl Chem & Microbiol, FIN-00014 Helsinki, Finland 2.Acad Sinica, Inst Geog, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Hartikainen, H,Pietola, L,Simojoki, A. Quantification of fine root responses to selenium toxicity[J]. AGRICULTURAL AND FOOD SCIENCE IN FINLAND,2001,10(1):53-58.
APA	Hartikainen, H,Pietola, L,&Simojoki, A.(2001).Quantification of fine root responses to selenium toxicity.AGRICULTURAL AND FOOD SCIENCE IN FINLAND,10(1),53-58.
MLA	Hartikainen, H,et al."Quantification of fine root responses to selenium toxicity".AGRICULTURAL AND FOOD SCIENCE IN FINLAND 10.1(2001):53-58.